Created attachment 19830 [details] Backtrace This was originally reported at https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/287485 by Eric Drechsel: "To reproduce I start a failsafe console session, run kwin (kwin has compositing enabled, with opengl backend - no crash with xrender backend). Xorg backtrace (from startx over ssh): (EE) intel(0): tried to update DSPARB with both planes enabled! (EE) intel(0): underrun on pipe B! (EE) intel(0): underrun on pipe B! (EE) intel(0): underrun on pipe B! Backtrace: 0: /usr/bin/X11/X(xf86SigHandler+0x79) [0x80c2ff9] 1: [0xb8045400] 2: /usr/lib/dri/i915_dri.so(intelCopyTexImage2D+0x14a) [0xaf67e83a] 3: /usr/lib/dri/i915_dri.so(_mesa_CopyTexImage2D+0x1d4) [0xaf718334] 4: /usr/lib/xorg/modules/extensions//libglx.so [0xb7b351ca] 5: /usr/lib/xorg/modules/extensions//libglx.so [0xb7b5e36f] 6: /usr/lib/xorg/modules/extensions//libglx.so [0xb7b62c0a] 7: /usr/bin/X11/X(Dispatch+0x34f) [0x808c88f] 8: /usr/bin/X11/X(main+0x47d) [0x8071d1d] 9: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7c44685] 10: /usr/bin/X11/X [0x8071101] Saw signal 11. Server aborting. xinit: connection to X server lost. waiting for X server to shut down" This is with Mesa 7.2. I will attach the users Xorg.0.log.old, xorg.conf, backtrace and output of lspci -vvnn
Created attachment 19831 [details] Output of lspci -vvnn
Created attachment 19832 [details] xorg.conf
Created attachment 19833 [details] Xorg.0.log.old
Hi, I'm the original reporter. It seems that there was a wrong setting in some kwin related config file, deleting the several kwin configs eliminates the crash. If someone is interested in the particular setting that causes the crash, I can find it by experimentation but otherwise this bug can be closed. Thanks!
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